Geometry app three suggestions

[eried]

- A way to input a coordinate:
I know tap and cursor keys work to adjust the position, but if you zoom you sometimes can't longer get some positions like 0,0

- Better touch control:
Zoom gesture
Tap and drag should just pan the area, not change the cursor position

- More visual cues, example middle of segment, tangent when tapping (you don't really want to input a specific position just by tapping, so it makes sense that object have "magnetic" cues)

I really wanted to check this app once the prime was announced because I always was impressed by the TI one, but in the current stage the app is, it is barely usable for anything simple (and the flickering is so noticeable in this one, its like watching an old crt thru a camcorder viewfinder).